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74163 (1998 QA104)
Classification: Main-belt Asteroid          SPK-ID: 2074163
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1781258698038525 5.0458e-08  
a 2.614064352873227 1.4126e-08 au
q 2.148431866294438 1.3706e-07 au
i 7.300364611138781 5.0396e-06 deg
node 39.33723150950578 2.8914e-05 deg
peri 345.244961141174 3.1169e-05 deg
M 29.25259901288062 1.0674e-05 deg
tp 2458875.060360761896
(2020-Jan-26.56036076)
4.5409e-05 TDB
period 1543.735314111174
4.23
1.2514e-05
3.426e-08
d
yr
n .2332005990335687 1.8903e-09 deg/d
Q 3.079696839452015 1.6643e-08 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      21918 days (60.01 yr)  
   first obs. used      1960-10-25  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:47  

Additional Information
 Earth MOID = 1.15352 au 
 Jupiter MOID = 2.37273 au 
 T_jup = 3.374 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO449468  

74163 (1998 QA104)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QA104 = 2002 QD10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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